Led Zeppelin's New Singer: Bjork!

April Fool's Day isn't just for smart aleck 7th graders -- it's for rock stars, too! Read on for the best practical jokes from music's elite:

Bjork:In a website post this morning, the Icelandic singer announced she would step in for Robert Plant as vocalist for Led Zeppelin's world tour. But she has a few demands: The band only play songs from album I and IV, including classics like ??"Good Times Bad Times," "Dazed and Confused," and "Stairway to Heaven."

Coldplay:Chris Martin took to Coldplay's blog this morning to announce some out-of-this-world news: "Coldplay are to boldly go where no musicians have gone before, by recording in zero gravity." Martin wrote that "the band will board a modified Boeing 727 aircraft, which can provide zero gravity for periods of 20-25 seconds at a time," to record with producer Brian Eno. "We've been searching for the right environment to record the perfect snare drum sound for many years now," Martin explained. "I've just got a gut feeling that zero gravity is the place to do that, y'know?"

Kid Rock:The American Badass' new brand of beer is no joke -- but this just-announced news certainly is: "Kid Rock has purchased the naming rights to the home of the Detroit Tigers," a early-morning press release explained. It also claimed that Rock's new brew will be the official beer of the Detroit Tigers. "This has been a dream of mine for a long time... I've never been more excited for opening day, and I'm proud to be able to add my name to the legacy of my favorite baseball team," Rock added. Nice try, dude.

Nine Inch Nails:Trent Reznor working with Timbaland? Yeah, right. But as of this morning the industrial rock kingpin's website is selling downloads of Strobe Light, a new album featuring production from Timbaland and cameos from Bono, Chris Martin, Alicia Keys, and Ministry rocker Al Jourgensen, among others. Sheryl Crow even duets with Reznor on a tune called "Pussygrinder." Check out the hilarious tracklist here.

Peter, Bjorn, and John:The dapper Swedes released "Peter Bjorn and John Shreds," a live concert video that a statement called "one of the most highly anticipated clips in music history." So what is it? Footage of the band onstage making unintelligible noise for three minutes. "The release of 'Peter Bjorn And John Shreds' marks a historic moment in rock'n'roll," PB&J's manager Per Wikström said. "Peter Bjorn and John fans have every reason to celebrate, for this is only the beginning." Actually, hopefully this is the end. Check out the video below.